Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）..

第1题

[] Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means （）.

A、A.lubricating oil B、B.lubricating oil systems C、C.strainers D、D.cartridges

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第2题

[单选题] In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）

A、lubricating oil B、dry sump C、circulated tank D、wet sump

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第3题

[单选题] Which of the petroleum products listed has the lowest flash point?（）

A、Hydraulic oil B、Lubricating oil C、Diesel oil D、Refrigeration oil

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第4题

[单选题] One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）

A、high TBN value B、low oil floc point C、low oil demulsibility D、low oil neutralization number

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第5题

[单选题] Lubricating oil viscosity in an operating diesel engine can be reduced by（）

A、increasing cooling water flow B、increasing lube oil flow C、dilution by fuel oil D、adding SAE 70 oil

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第6题

[单选题] In motor-ships, （）, after passing through main and motion bearings and oil cooled pistons, etcis either retained in the bedplate.

A、the fuel oil B、the lubricating oil C、the refrigerating oil D、the hydraulic oil

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第7题

[单选题] For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.

A、oil spray B、oil bath C、oil control rings D、drilled passage through the camshaft

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第8题

[单选题] Excessive lubricating oil consumption in a running diesel engine can be caused by （）

A、clogged lube oil piping B、excessive valve-guide clearance C、high lube oil viscosity D、low lube oil temperature

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第9题

[单选题] When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.

A、filter to remove the fuel oil B、use the settler to remove the fuel oil C、remove the fuel oil by centrifuging D、drain and then renew the lube oil supply

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Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）

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